13898555806 has 16 divisors (see below), whose sum is σ = 21759273648. Its totient is φ = 6651860800.

The previous prime is 13898555789. The next prime is 13898555809. The reversal of 13898555806 is 60855589831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13898555809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1594660 + ... + 1603351.

It is an arithmetic number, because the mean of its divisors is an integer number (1359954603).

Almost surely, 2^13898555806 is an apocalyptic number.

13898555806 is a deficient number, since it is larger than the sum of its proper divisors (7860717842).

13898555806 is a wasteful number, since it uses less digits than its factorization.

13898555806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3198107.

The product of its (nonzero) digits is 10368000, while the sum is 58.

The spelling of 13898555806 in words is "thirteen billion, eight hundred ninety-eight million, five hundred fifty-five thousand, eight hundred six".